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From Tony Finch <>
Subject Re: [PATCH] apache_1.3.9-mod_rewrite-hash-patch
Date Sun, 10 Oct 1999 20:15:28 GMT (WOL - Odinn Sorensen) wrote:
>While investigating ways to do really massive virtual hosting, I needed some
>way to introduce hashing of document roots, without the overhead of calling 
>external mapping programs.

How big is "really massive"? Demon use a layout similar to the second
example described in on
the Homepages system which has about 70,000 vhosts.

Using a hash is attractive from the point of view of doing it
properly, but in my experience it makes it harder for the sysadmins to
locate a particular web site in the filesystem for debugging or
support or whatever.

>The following patch to mod_rewrite (against 1.3.9), adds a new internal
>mapping function, "hash" and the configuration directive RewriteHashBuckets.

Cool, but I still think you should use mod_vhost_alias (of course I would).


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